/* -------------------------------------------------------------------------
 *
 *	  EUC_JIS_2004 <--> UTF8
 *
 * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * IDENTIFICATION
 *	  src/backend/utils/mb/conversion_procs/utf8_and_euc2004/utf8_and_euc2004.c
 *
 * -------------------------------------------------------------------------
 */

#include "postgres.h"
#include "knl/knl_variable.h"
#include "fmgr.h"
#include "mb/pg_wchar.h"
#include "../../Unicode/euc_jis_2004_to_utf8.map"
#include "../../Unicode/utf8_to_euc_jis_2004.map"
#include "../../Unicode/euc_jis_2004_to_utf8_combined.map"
#include "../../Unicode/utf8_to_euc_jis_2004_combined.map"

PG_MODULE_MAGIC;

PG_FUNCTION_INFO_V1(euc_jis_2004_to_utf8);
PG_FUNCTION_INFO_V1(utf8_to_euc_jis_2004);

extern "C" Datum euc_jis_2004_to_utf8(PG_FUNCTION_ARGS);
extern "C" Datum utf8_to_euc_jis_2004(PG_FUNCTION_ARGS);

/* ----------
 * conv_proc(
 *		INTEGER,	-- source encoding id
 *		INTEGER,	-- destination encoding id
 *		CSTRING,	-- source string (null terminated C string)
 *		CSTRING,	-- destination string (null terminated C string)
 *		INTEGER		-- source string length
 * ) returns VOID;
 * ----------
 */
Datum euc_jis_2004_to_utf8(PG_FUNCTION_ARGS)
{
    unsigned char* src = (unsigned char*)PG_GETARG_CSTRING(2);
    unsigned char* dest = (unsigned char*)PG_GETARG_CSTRING(3);
    int len = PG_GETARG_INT32(4);

    CHECK_ENCODING_CONVERSION_ARGS(PG_EUC_JIS_2004, PG_UTF8);

    LocalToUtf(src,
        len,
        dest,
        LUmapEUC_JIS_2004,
        lengthof(LUmapEUC_JIS_2004),
        LUmapEUC_JIS_2004_combined,
        lengthof(LUmapEUC_JIS_2004_combined),
        NULL,
        PG_EUC_JIS_2004);

    PG_RETURN_VOID();
}

Datum utf8_to_euc_jis_2004(PG_FUNCTION_ARGS)
{
    unsigned char* src = (unsigned char*)PG_GETARG_CSTRING(2);
    unsigned char* dest = (unsigned char*)PG_GETARG_CSTRING(3);
    int len = PG_GETARG_INT32(4);

    CHECK_ENCODING_CONVERSION_ARGS(PG_UTF8, PG_EUC_JIS_2004);

    UtfToLocal(src,
        len,
        dest,
        ULmapEUC_JIS_2004,
        lengthof(ULmapEUC_JIS_2004),
        ULmapEUC_JIS_2004_combined,
        lengthof(ULmapEUC_JIS_2004_combined),
        NULL,
        PG_EUC_JIS_2004);

    PG_RETURN_VOID();
}
